Plow-jointer



(No Model.) y

L. P. THOMPSON. PLOW JOINTER.

No. 435,617. Patented Sept. 2, 1890.

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UNITED STATES PATENT OFFICE LESTER P. THOMPSON, OF PHELPS, NEIV YORK.

PLOW-JOINTER.

SPECIFICATION forming part of Letters Patent No. 435,617, datedSeptember 2, 1890.

Application filed December 31, 1885. Serial No.187,211. (N0 model.)

To all whom it may concern.-

Be it known that I, LESTER P. THOMPSON, of Phelps, in the county ofOntario and State of New York, have invented a certain new and usefulImprovement in Plow-Jointers; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the accompanying drawings, in which- Figure 1 is a perspective viewof the device. Fig. 2 is a top View of the same. Fig. 3 is a side viewof the standard removed from place. Fig. 4 is a bottom or back view ofthe wing. Fig. 5 is a section in line or x of Fig. 1.

My invention consists of a reversible plowjointer having twoopening-points and two side wings, the latter when in position forming ahorizontal cutting-edge, while the other wing and point serve thepurpose of a turning mold-board by reason of their special curvature andhaving a central bolt-hole and two bosses for the securing of thejointer to the share, as hereinafter more fully described.

In the drawings,A shows the standard, and B shows the wing. The standardis of usual form, but has a curve or bend a near the lower end, whichbrings the blade in proper position to cut in advance of the plow, andalso allows proper clearage. The wing is made with two opening-points bb, which are counterparts, also two side wings a c for turning thefurrow. In the center is a hole d, through which passes a bolt f, thatsecures the wing to the foot g of the standard. On each side of the boltand equidistant therefrom the wing has on its under side two bosses orstuds h h, which strike into holes in the foot of the standard, and thushold the wing in position and prevent it from swinging around. Incross-section the wing has such a curve as to properly throw the furrowover whichever of the points stand forward.

By the form of the wing as above described, with two points and twocurved sides, which are counterparts and equidistant from the center,the wing can be used either end forward with the same result. The curvesare reverse to each other, by which means, when standing in front, eachwill turn its furrow. The bosses or studs h h hold the point in placewith the assistance of a single bolt.

As ordinarily constructed, the beam of the plow is swiveled or pivotedon the front end of the landside or mold-board, so that the beam can beset at different angles, according to the necessities of the case. Forinstance, if three horses are used instead of two, the beam is set tothe left. This of course carries the jointer with it and presents thepoint at a different angle to the cut of the plow. It is necessary,therefore, to change the jointer on its standard, so as to stand squareor in line with the cut. This is done by making two holes (Z (l in thefoot of the standard, through either of which the bolt f can pass. It isonly necessary to change the bolt from one to the other of the holes toaccomplish the result. A single hole only is required in the point, andas one at least of the bosses h will remain in its hole the point willbealways held in a fixed position.

Having described my invention, I do not claim, simply and broadly, aplow-point made goigble pointed and reversible in position;

What I claim as new, and desire to secure by Letters Patent, is

l. A reversible jointer formed with two opening-points b b and two sidewings c c, the latter when in position forming a horizontal cuttingedge,while the other wing and point serve the purpose of a turning mold-boardby reason of their special curvature, and having a central bolt-hole andtwo spurs or bosses, substantially as shown and described.

2. The combination of the reversible j ointer having a central bolt-holeand two bosses with a standard A, curved outward, as at a, and providedwith an enlarged share-seat having two nearly central holes and twoperforations to receive the bosses on the back of the jointer, asspecified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

LESTER P. THOMPSON.

Witnesses:

WM. B. l-lorcnKrss, NATHAN OAKS.

